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arXiv 2201.07471math.OC
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线性抛物型控制约束最优控制问题的对偶解法

A duality-based approach for solving linear parabolic control constrained optimal control problems

Hailing Wang, Changjun Yu, Di Wu

摘要:

本文研究了由线性抛物型方程控制的最优控制问题,并对控制变量进行了箱形约束。这类问题在加热和冷却系统中有重要的应用。通过应用Fenchel对偶的方法,我们明确地导出了原问题中的控制约束嵌入对偶问题的目标泛函中的对偶问题。证明了对偶问题解的存在唯一性,并给出了一阶最优性条件最优性条件。此外,我们还讨论了原问题解与对偶问题解之间的鞍点性质。原问题的解可由对偶问题的解得到。为了数值求解这一对偶问题,我们设计了两种可实现的方法:共轭梯度法和半光滑牛顿法。算例结果表明,该方法具有较高的精度和有效性.

英文摘要:

This paper is concerned with the optimal control problem governed by a linear parabolic equation and subjected to box constraints on control variables. This type of problem has important applications in heating and cooling systems. By applying the scheme of Fenchel duality, we derive the dual problem explicitly where the control constraints in primal problem are embedded in the dual problem's objective functional. The existence and uniqueness of the solution to the dual problem are proved and the first-order optimality conditions are also derived. In addition, we discuss the saddle point property between solution of the primal problem and the dual problem. The solution of primal problem can be readily obtained by the solution of the dual problem. To solve the dual problem numerically, we design two implementable method: conjugate gradient method and semismooth Newton method. Three example problems are solved, numerical results show that the proposed method is efficient and accurate.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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